Finding the Fourth Proportional to 2,852.35, 4,275.59 and 1,389.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,852.35 : 4,275.59 = 1,389.69 : x
2. Step 2: Convert to fraction form
   2,852.35/4,275.59 = 1,389.69/x
3. Step 3: Cross multiply
   2,852.35x = 4,275.59 × 1,389.69
4. Step 4: Simplify right side
   2,852.35x = 5,941,737.72
5. Step 5: Solve for x
   x = 5,941,737.72/2,852.35
6. Step 6: Final answer
   x = 2,083.10